The project will stretch 25 miles from west of Kirkman Road to east of State Road 434.

Lawmakers said the change will help the clogged road.

"It's a real opportunity for central Florida to do this, to increase the availability of a relief valve for central Floridians," Sen. David Simmons said.

Four express lanes will be added down the middle of I-4.

While the tolls will be optional, they will not be cheap and would be the highest during peak traffic times.

They estimate a commute from Longwood to downtown Orlando would cost up to $7.70 during morning rush hour. The trip home would be up to $5.60 during the evening rush. That's a total of more than $13 a day.

From south of Orlando, a trip from Kirkman Road to downtown Orlando would cost up to $4.60 in the morning and up to $4.30 during the evening rush. That total is close to $9 a day.

It may sound like a lot, but some drivers said if traffic was congested enough, they'd pay it.

"I know I would," said Euphema Brashear. "I hate to say it but yes, I would. Sometimes I am stuck for an hour or two and can't move. It's really bad."

Simmons said it will be great to ease traffic congestion.

Private investors will help fund nearly $1 billion of the bill. They will be reimbursed with the toll money.